zdx_get_device

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The description adds the term 'read-only', which reinforces the readOnlyHint annotation. There is no contradiction. However, it does not disclose additional behavioral traits such as the scope of data returned or performance implications. With annotations already present, a score of 3 is appropriate.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise with a single sentence of 9 words. It is front-loaded with the core action and resource. It could be slightly more structured, but it is efficient and clear.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the presence of an output schema, return values are adequately covered. However, the description does not mention the optional filtering parameters (location, department, geo, since, service) which are available in the input schema. This omission reduces completeness for a tool with multiple optional parameters.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the baseline is 3. The description adds no additional meaning beyond the schema; it does not explain parameter usage or constraints. The schema itself is sufficient, but the description offers no extra semantic value.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states 'Get a specific ZDX device by ID', using a specific verb and resource. The 'by ID' qualifier distinguishes it from the sibling tool 'zdx_list_devices' which retrieves multiple devices. However, it could be more explicit about the distinction.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description does not provide any guidance on when to use this tool versus alternatives. It neither mentions when it is appropriate to use nor indicates when other tools like 'zdx_list_devices' or 'zdx_get_device_deep_trace' might be better suited.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.